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Feng Yejun Y The Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, - - 2014
We present the design of an efficient bellows-controlled diamond anvil cell that is optimized for use inside the bores of high-field superconducting magnets in helium-3 cryostats, dilution refrigerators, and commercial physical property measurement systems. Design of this non-magnetic pressure cell focuses on in situ pressure tuning and measurement by means ...
Wu J J JJ 1] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China [2] Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, TX 78712, - - 2014
One of key issues in studying iron based superconductors is to understand how the magnetic phase of the parent compounds evolves. Here we report the systematic investigation of paramagnetic to antiferromagnetic and tetragonal to orthorhombic structural transitions of "122" SrFe2As2 parent compound using combined high resolution synchrotron Mössbauer spectroscopy and ...
Zyła Gaweł G Department of Physics, Rzeszów 35-905, Poland. - - 2014
The paper presents results of rheological experiments on viscosity under anisotropic pressure and in electric field of diethylene glycol-based MgAl2O4 nanofluids. Nanofluids have been prepared in a two-step method. The dynamic viscosity of nanofluids with various mass concentrations of nanoparticles was measured in the range of shear rates from 10 ...
Bardgett Megan E - - 2013
Development of angiotensin II (Ang II)-dependent hypertension involves microglial activation and proinflammatory cytokine actions in the hypothalamic paraventricular nucleus (PVN). Cytokines activate receptor signaling pathways that can both acutely grade neuronal discharge and trigger long-term adaptive changes that modulate neuronal excitability through gene transcription. Here, we investigated contributions of PVN ...
Fitta Magdalena - - 2013
A comprehensive study of magnetocaloric effect (MCE) and critical behaviour in the ferrimagnetic Mn2-pyridazine-[Nb(CN)8] molecular magnet under hydrostatic pressure is reported. The pressure-induced structural changes provoke the strengthening of magnetic interaction between Mn and Nb centres. Consequently, an increase of critical temperature Tc is observed from 43 K for a sample at ambient ...
Zhao Hong Jian - - 2013
First-principles calculations are performed to investigate structural and magnetic behaviors of rare-earth orthochromates as a function of 'chemical' pressure (that is, the rare-earth ionic radius), epitaxial misfit strain and hydrostatic pressure. From a structural point of view, (i) 'chemical' pressure significantly modifies antipolar displacements, Cr-O-Cr bond angles and the resulting oxygen ...
Elli Murat M *Department of Pediatric Oncology, Medical Faculty, Ondokuz Mayis University, Samsun 55039, Turkey. - - 2013
Wilms' tumor, or nephroblastoma, is the most common primary malignant renal tumor of childhood. The excellent outcome now expected for most children with this tumor is attributed to the combination of effective adjuvant chemotherapy, improved surgical and anesthetic techniques and also the radiosensitivity of the tumor. The numerous organ systems ...
Podduturi Vishwa Priya - - 2013
Determining the factors that influence the delivery of sub-micron particles to tumors and understanding the relative importance of each of these factors is fundamental to the optimization of the particle delivery process. In this paper, a model that combines random walk with the pressure driven movement of nanoparticles in a ...
Kwok Sit Yee - - 2013
Catecholamine-associated cardiomyopathies caused by neuroblastoma have rarely been reported. We are reporting 2 cases of neuroblastoma associated with hypertension and severe cardiomyopathic changes in different extremes. One case was dilated cardiomyopathy with heart failure, and the other showed echocardiographic features simulating hypertrophic obstructive cardiomyopathy. Both girls had high levels of ...
Suzuki Sumihiro - - 2013
Thermodynamic stability boundary of structure-H hydrates with large guest species and methane (CH4) at extremely high pressures has been almost unclear. In the present study, the four-phase equilibrium relations in the structure-H CH4+1,1,2,2,3,3,4-heptafluorocyclopentane (1,1,2,2,3,3,4-HFCP) mixed hydrate system were investigated in a temperature range of (281.05 to 330.12) K and a ...
Dasilva Jack G - - 2013
The magnetic properties of [Fe(III)Cp*2]˙(+)[HCBD]˙(-) (Cp* = pentamethylcyclopentadienide; HCBD = hexacyanobutadienide, C4(CN)6) and [Fe(III)Cp*2]˙(+)[DDQ]˙(-) (DDQ = 2,3-dichloro-5,6-dicyanoquinonide) were measured at ambient and applied hydrostatic pressures up to 11.4 and 9.2 kbar, respectively. At ambient pressure [FeCp*2][HCBD] exhibits spin glass-like behavior with a freezing temperature, Tf, of 2.93 K from the ...
Ansari Mohammad Ali - - 2013
Diffuse optical tomography (DOT) is an emerging oncological imaging modality that is based on a near-infrared optical technique. DOT provides the spatial volume and depth of tumors by determination of optical properties of biological tissues, such as the absorption and scattering coefficients. During a DOT, the optical fibers are kept ...
Legrand V - - 2013
The magnetic symmetry and structure of the non-Fermi liquid heavy fermion compound CeNiGa2 has been determined by neutron powder diffraction. The orthorhombic CeNiGa2 compound orders antiferromagnetically below 4.4(2) K at ambient pressure with a magnetic moment magnitude of μCe = 0.80(4) μB for moments aligned along the c-axis. The magnetic (Shubnikov) space group is ...
Dasilva Jack G - - 2013
The pressure dependence of the magnetic properties of ferrimagnetic Mn(II)(TCNE)I(OH2) up to 14.05 kbar and Mn(II)(TCNE)3/2(I3)1/2·zTHF up to 14.32 kbar were studied. For Mn(II)(TCNE)I(OH2), two distinct pressure regions separated at ∼1 kbar were evident in both the temperature and the field-dependent magnetic measurements. No increase of the magnetic properties was ...
Borowski Allison M - - 2013
RATIONALE AND OBJECTIVES: The end point of chemoembolization for hepatocellular carcinoma is qualitative. We intended to determine the feasibility of measuring intra-arterial pressure changes after chemoembolization and hypothesized that pressures would increase in the distal hepatic artery after the procedure. MATERIALS AND METHODS: Before and after chemoembolization, systemic (S) systolic ...
Ramseyer Vanesa D - - 2013
Tumor necrosis factor-α (TNF-α) is a pleiotropic cytokine that becomes elevated in chronic inflammatory states such as hypertension and diabetes and has been found to mediate both increases and decreases in blood pressure. High levels of TNF-α decrease blood pressure, whereas moderate increases in TNF-α have been associated with increased ...
Hamann A - - 2013
In the prototypical heavy-fermion system CeCu_{6-x}Au_{x}, a magnetic quantum critical point can be tuned by Au concentration x, hydrostatic pressure p, or magnetic field B. A striking equivalence of the tuning behavior with x or p had been found with respect to thermodynamic and transport properties. By means of elastic ...
Garcia-Saiz Abel - - 2013
We report a combined study using magnetization and Raman spectroscopy on the magnetic ionic liquid 1-ethyl-3-methylimidazolium tetrachloroferrate, Emim[FeCl4]. This material shows a long-range antiferromagnetic ordering below the Néel temperature TN ≈ 3.8 K. The effects of pressure on the magnetic properties have been studied using a miniature piston-cylinder CuBe pressure ...
Zhou X - - 2013
We have studied the pressure-induced phase transitions from NaCl-type (B1) to CsCl-type (B2) structure in BaS, BaSe and BaTe by using ab initio density functional theory computations in the local density approximation. The Buerger and WTM mechanisms were explored by mapping the enthalpy contours in two- and four-dimensional configuration space ...
Vlaisavljevich Eli - - 2013
This paper is an initial work towards developing an image-guided, targeted ultrasound ablation technique by combining histotripsy with nanodroplets that can be selectively delivered to tumor cells. Using extremely short, high-pressure pulses, histotripsy generates a dense cloud of cavitating microbubbles that fractionates tissue. We hypothesize that synthetic nanodroplets that encapsulate ...
Santander Petra - - 2012
Swallowing disturbances are common after neurological disease and oropharyngeal tumor resection. In this case the oral stage is often affected. So far the clinical evaluation of the oral phase is limited. Recently the role of pressure changes during oropharyngeal swallowing has been pointed out, but until now there are not ...
Radulescu R T - - 2012
Hypertension ranks among the most important disease challenges on a global scale. Here, a novel hypothesis is presented which implicates angiotensinogen, i.e. the precursor protein for the hypertensive peptide angiotensin II, as a key culprit in the pathogenesis of hypertension. This hypothesis more precisely entails that intracellular angiotensinogen binds and ...
Fraysse Guillaume - - 2012
We report unprecedented dramatic changes in the 647.1 nm Raman signal of PbZr(0.6)Ti(0.4)O(3) occurring in the same pressure ranges as the critical pressures of the antiferrodistortive and ferroelectric-paraelectric phase transitions. This huge decrease in intensity of both the Raman modes and the background, observed for both pressure transmitting media used ...
Yang Seung Yun - - 2012
Diamond-anvil cell, pressure-tuning infrared (IR), and Raman microspectroscopic measurements have been undertaken to examine the effects of high pressures up to about 45 kbar on the vibrational spectra of the four DNA bases, adenine, cytosine, guanine, and thymine. Small structural changes were evident for all the four bases, viz., for adenine ...
Zhang Xinxin - - 2012
The high-pressure crystal structures of the "111" type iron-based superconductors: NaFeAs, LiFeP and LiFeAs have been systematically explored by using particle-swarm structural searches. It was found that though these iron-based superconductors are chemically similar, they adopted distinct structural phase transitions: P4/nmm → Cmcm → P3[combining macron]m1 for NaFeAs, P4/nmm → ...
Blake E - - 2012
Topical protoporphyrin (PpIX)-induced photodynamic therapy (PDT) relies on the penetration of the prodrug into the skin lesion and subsequent accumulation of the photosensitizer. Methyl aminolevulinate (MAL)-PDT is an established treatment for thinner and superficial non-melanoma skin cancers (NMSCs) but for the treatment of the thicker nodular basal cell carcinoma (nBCC) ...
Korfhagen Joseph J - - 2012
Transcranial ultrasound improves thrombolytic drug efficacy in ischemic stroke therapy. The goal of this study was to determine the ideal ultrasound parameters for obtaining peak rarefactional pressures exceeding the stable cavitation threshold at the left anterior clinoid process (lACP) of the skull. This location is near the origin of the ...
Kyle B - - 2012
Standard cardiorespiratory monitoring may fail to detect occult tissue ischaemia. This study assessed whether a near infra-red spectroscopy tissue oxygen saturation monitor (InSpectra™) could detect progressive peripheral tissue ischaemia and whether hyperoxia may confound tissue oxygen saturation measurement. Tissue oxygen and arterial oxygen saturations were measured continuously in 30 healthy ...
Forget P - - 2012
BACKGROUND: /st>Muscular compartment syndrome (MCS) is a rare but serious postoperative complication. In vivo optical spectroscopy (INVOS) monitors continuously and non-invasively regional oxygen saturation (rSO(2)), and could predict the development of MCS. METHODS: /st>In 10 healthy volunteers, we inflated a tourniquet to the mean arterial pressure to produce slight venous ...
Goktas Altan - - 2012
Objective: To evaluate the short-term impact of intravitreal ranibizumab injection on axial ocular dimension (AOD) and intraocular pressure (IOP). Methods: A total of 31 patients who received 0.05 mL intravitreal ranibizumab injection (IRI) for age-related macular degeneration and 30 healthy volunteers were enrolled in the study. AODs i.e. anterior chamber depth ...
Lahoria Rajat - - 2012
Low pressure headache typically occurs as a complication of dural puncture. "Spontaneous" low pressure headache is a relatively rare but under-recognised cause of intractable headache. Clinical suspicion of this condition warrants imaging of the brain to confirm the diagnosis; spinal imaging may be needed to identify the site of the ...
Young Stephen R - - 2012
Tissue oedema plays an important role in the pathology of chronic and traumatic wounds. Negative pressure wound therapy (NPWT) is thought to contribute to active oedema reduction yet few studies have showed this effect. In this study high frequency diagnostic ultrasound at 20 MHz with an axial resolution of 60 ...
De Simone Roberto - - 2012
The recently advanced hypothesis that idiopathic intracranial hypertension without papilledema (IIHWOP) is a powerful risk factor for the progression of pain in individuals prone to episodic primary headache implies that IIHWOP is much more prevalent than it is believed to be in the general population and that it can run ...
Ko Sang-Bae - - 2012
Spontaneous intracerebral hemorrhage (ICH) is a devastating disease with high morbidity and mortality. Acutely, ICH is associated with a sudden surge in intracranial pressure (ICP), as the volume of hematoma increases the pressure in the closed head, leading to non-specific symptoms of ICP: headache, nausea, vomiting, and alterations in consciousness. ...
Hirsch Sebastian - - 2012
Noninvasive image-based measurement of intrinsic tissue pressure is of great interest in the diagnosis and characterization of diseases. Therefore, we propose to exploit the capability of phase-contrast MRI to measure three-dimensional vector fields of tissue motion for deriving volumetric strain induced by external vibration. Volumetric strain as given by the ...
Fichtner Jens - - 2012
BACKGROUND AND IMPORTANCE: Epidural blood patch (EBP) is one therapeutic measure for patients suffering from spontaneous intracranial hypotension (SIH) or post-lumbar puncture headaches. It has been proposed that an EBP may directly seal a spinal cerebrospinal fluid (CSF) fistula or result in an increase in intracranial pressure (ICP) by a ...
Park Sung-Min - - 2012
Aortic cross clamping is associated with spinal cord ischemia. This study used a rat spinal cord ischemia model to investigate the effect of distal aortic pressure on spinal cord perfusion. Male Sprague-Dawley rats (n=12) were divided into three groups. In group A (n=4), the aorta was not occluded. In groups ...
Levchenko G - - 2012
The high hydrostatic pressure effect on the magnetic properties of the layered hybrid compounds Cu(2)(OH)(3)(C(n)H(2n+1)CO(2))⋅mH(2)O with distance between magnetic layers of up to 40 Å is studied. It is shown that the temperature of the ferromagnetic ordering decreases linearly with pressure increase. From measurements of susceptibility in the paramagnetic region, using both ...
Komur Mustafa - - 2012
Idiopathic intracranial hypertension is a headache syndrome characterized by elevated intracranial pressure with normal cerebrospinal fluid content, normal cranial imaging, and elevated appearance of the optic disc. We report on a 6.5-year-old boy with complaints of headache and right esotropia causing diplopia. A lumbar puncture indicated an opening cerebrospinal fluid ...
Greenwood Michelle - - 2012
In 2007, the Tissue Viability Society defined tissue viability as: 'A growing speciality that primarily considers all aspects of skin and soft tissue wounds including acute surgical wounds, pressure ulcers and all forms of leg ulceration. However, it is not just wound management, it also covers a wide range of ...
Elliott N S J - - 2012
Syrinxes are fluid-filled cavities of the spinal cord that characterize syringomyelia, a disease involving neurological damage. Their formation and expansion is poorly understood, which has hindered successful treatment. Syrinx cavities are hydraulically connected with the spinal subarachnoid space (SSS) enveloping the spinal cord via the cord interstitium and the network ...
Ji Su-Min - - 2012
Recent genomewide association studies of large samples have identified genes that are associated with blood pressure. The Global Blood Pressure Genetics (Global BPgen) and Cohorts for Heart and Aging Research in Genome Epidemiology (CHARGE) consortiums identified 14 loci that govern blood pressure on a genomewide significance level, one of which ...
Kim Jennifer H - - 2012
Pressure mapping alone insufficiently describes tissue health. Comprehensive, quantitative non invasive assessment is crucial. Interface pressures (IPs) and transcutaneous blood gas levels [transcutaneous tissue oxygen (T(c) PO(2) )] were simultaneously assessed over both ischia and the sacrum to investigate the hypotheses: (i) tissue oxygenation decreases with sustained applied pressure; (ii) ...
Klingeberg T - - 2012
In long-term prevention and in rehabilitation of health of elderly people the recording of vital signs plays an important role. Especially the progress of rehabilitation can be deduced from the recording of an electrocardigram (ECG), blood pressure and body temperature. In this paper we present a wireless coupled recording device ...
Wan Jun - - 2012
Despite substantial advances in orthopaedic surgery, bone nonunion is still a matter of debate for orthopaedic surgeon to provide optimal options on treatment of nonunion. Negative pressure therapy has already been successfully used in dealing with complex kinds of soft tissue healing. Some studies show that negative pressure can induce ...
Jagannathan Narasimhan - - 2011
Objectives:  To assess the clinical efficacy of the self-pressurized air-Q ILA™ (ILA-SP). Aim:  The purpose of this prospective audit was to evaluate the feasibility of the ILA-SP in clinical practice and generate data for future comparison trials. Background:  The ILA-SP is a new first-generation supraglottic airway for children with a ...
Yildirimturk Ozlem - - 2011
PURPOSE: Right ventricular systolic pressure is crucial for both treatment and prognosis of cardiovascular and pulmonary diseases. The proper measurement of right ventricular systolic pressure depends on an accurate estimation of right atrial pressure (RAP). There is no standard method for estimating RAP noninvasively. The purpose of this study was ...
Lechner T J M - - 2011
The insertion of an epidural catheter for labour analgesia may be challenging. This observational study compared pressures during insertion of an epidural catheter in pregnant (n = 35) and non-pregnant (n = 10) women, using an acoustic device for locating the epidural space that also records and stores pressure data during the ...
Vance Amanda - - 2011
Objective  The purpose of this study was to investigate the effect of extubation with the endotracheal tube (ETT) cuff inflated versus deflated on endotracheal fluid volume in normal canine cadavers. Study Design  Prospective randomized blinded controlled cadaver study. Animals  Sixteen adult Beagle cadavers weighing 10.7 ± 1.7 kg (mean ± SD) and <2 years of age. ...
Madhuri Vrisha - - 2011
Documentation of femoral head blood flow before, during and after head preserving surgery is important for safeguarding vascularity to the femoral head and for documentation in patients in whom the blood flow is compromised. Laser Doppler flowmetry and microsensor intracranial pressure (ICP) transducers have been used to satisfactorily depict such ...
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